set of 3 Sir Edward shipmasters whisky glasses 1980 England

Very nice set of 3 Whiskey glasses with on the back measuring stripes by Sir Edward. Single for the Ladies, double for the gentlemen and triple for the shipmasters. On the front there are 3 different brands of whisky, namely Long John, White horse and white label. These glasses were probably produced in England in the 1980’s. They measure  8cm or 3 1/4 inches high and are all identical in size, with a small (different) number on the bottom. Check the attached video on whisky collecting!